Tosot DC Inverter U-match Series Owner'S Manual Download Page 14

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DC Inverter U-match Series Duct Type Unit

shall be able to withstand the pressure of 6.0MPa (870psig). The longer the
connecting pipe, the lower the cooling and heating effect performs.

3.4 Electrical Requirement

Electric Wire Size and Fuse Capacity.

Table 3.4

Indoor Units

Power Supply

Fuse Capacity

Minimum Circuit

Ampacity

Maximum

Overcurrent

Protection

V/Ph/Hz

TU18HFI

208V/230V ~60Hz

TU24HFI

208V/230V ~60Hz

TU30HFI

208V/230V ~60Hz

TU36HFI

208V/230V ~60Hz

TU42HFI

208V/230V ~60Hz

TU48HFI

208V/230V ~60Hz

Table 3.5

Outdoor Units

Power Supply

Fuse Capacity

Minimum Circuit

Ampacity

Maximum

Overcurrent

Protection

V/Ph/Hz

TU18H3O

208V/230V ~60Hz

15.9

TU24H3O

208V/230V ~60Hz

23.4

TU30H3O

208V/230V ~60Hz

23.4

TU36H3O

208V/230V ~60Hz

27.7

TU42H3O

208V/230V ~60Hz

29.7

TU48H3O

208V/230V ~60Hz

36.5

Notes:

①

The fuse is located on the main board.

②

Install the disconnect device with a contact gap of at least 3mm (1/8inch) in all

poles nearby the units (Both indoor unit and outdoor unit).The appliance must
be positioned so that the plug is accessible.

③

Take 2 pieces of power cord of 0.75mm

(AWG18) as the communication lines

between indoor and outdoor unit, with their longest lengths of 50m (164feet).
Please select the appropriate line length as per the actual installation

Summary of Contents for DC Inverter U-match Series

Page 1: ......

Page 2: ...TU18HFI TU24HFI TU30HFI TU36HFI TU42HFI TU48HFI TU18H3O TU24H3O TU30H3O TU36H3O TU42H3O TU48H3O ...

Page 3: ... advance before reusing it 3 Please properly select the model according to actual using environment otherwise it may impact the using convenience 4 This product has gone through strict inspection and operational test before leaving the factory In order to avoid damage due to improper disassembly and inspection which may impact the normal operation of unit please do not disassemble the unit by your...

Page 4: ......

Page 5: ...ing by the instruction manual of manufacturer 3 After verification the defect of product is directly caused by corrosive gas 4 After verification defects are due to improper operation during transportation of product 5 Operate repair maintain the unit without abiding by instruction manual or related regulations 6 After verification the problem or dispute is caused by the quality specification or p...

Page 6: ...Outdoor Unit 12 4 3 Installation of the Connection Pipe 13 4 4 Vacuum and Gas Leakage Inspection 17 4 5 Installation of the Drain Hose 19 4 6 Installation of the Duct 23 4 7 Electrical Wiring 25 5 Installation of Controllers 29 6 Test Running 30 6 1 Trial Operation and Testing 30 6 2 Working Temperature Range 32 7 Unit Function 33 7 1 Setting of Double Indoor Room Sensors 33 7 2 Checking of Outdoo...

Page 7: ... outdoor unit with the room air conditioner piping and cord available from our standard parts This installation manual describes the correct connections using the installation set available from our standard parts 6 Installation work must be performed in accordance with national wiring standards by authorized personnel only 7 If refrigerant leaks while work is being carried out ventilate the area ...

Page 8: ...perience and knowledge unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety 13 Children should be supervised to ensure that they do not play with the appliance 14 If the supply cord is damaged it must be replaced by the manufacturer its service agent or similarly qualified persons in order to avoid a hazard ...

Page 9: ...h Series Duct Type Unit 3 2 Outline of the Unit and Main Parts q Fig 2 1 The connection pipe drain pipe power cord and duct for this unit should be prepared by the user The unit is standard equipped with rectangular duct ...

Page 10: ...together 3 Hanger or 4 To fix the indoor unit except for TU36HFI TU42HFI 4 Screw 4 To fix the hook on the cabinet of the unit apply to TU48HFI 5 Nut with Washer 8 To fix the hook on the cabinet of the unit apply to TU18HFI TU24HFI TU30HFI 6 Nut with Washer 4 To be used together with the hanger bolt for installing the unit 7 Nut 4 To be used together with the hanger bolt for installing the unit 8 W...

Page 11: ...rong enough to withstand the weight of the unit and fixed securely otherwise the unit would topple or fall off Do not install where there is a danger of combustible gas leakage Do not install the unit near heat source steam or flammable gas Children under 10 years old must be supervised not to operate the unit Decide the installation location with the customer as follows 3 2 1 Indoor Unit 1 Instal...

Page 12: ...tall the outdoor unit in a place where it will be free from getting dirty or getting wet by rain as much as possible 3 Install the outdoor unit where it is convenient to connect the indoor unit 4 Install the outdoor unit where the condensate water can be drained out freely during heating operation Do not place animals and plants in the path of the warm air 5 Take the air conditioner weight into ac...

Page 13: ...er Diameter wall thickness mm inch Liquid Gas TU18HFI TU18H3O 6 1 4 12 7 1 2 50 164 15 49 1 5 Φ30 1 5 Φ1 1 8 3 50 TU24HFI TU24H3O 9 5 3 8 16 5 8 50 164 15 49 1 5 Φ20 1 2 Φ3 4 6 125 TU30HFI TU30H3O 9 5 3 8 16 5 8 50 164 15 49 1 5 Φ20 1 2 Φ3 4 6 125 TU36HFI TU36H3O 9 5 3 8 16 5 8 50 164 15 49 1 5 Φ20 1 2 Φ3 4 6 125 TU42HFI TU42H3O 9 5 3 8 16 5 8 50 164 15 49 1 5 Φ20 1 2 Φ3 4 6 125 TU48HFI TU48H3O 9 ...

Page 14: ... Units Power Supply Fuse Capacity Minimum Circuit Ampacity Maximum Overcurrent Protection V Ph Hz A A A TU18H3O 208V 230V 60Hz 5 15 9 25 TU24H3O 208V 230V 60Hz 5 23 4 40 TU30H3O 208V 230V 60Hz 5 23 4 40 TU36H3O 208V 230V 60Hz 5 27 7 45 TU42H3O 208V 230V 60Hz 5 29 7 50 TU48H3O 208V 230V 60Hz 5 36 5 60 Notes The fuse is located on the main board Install the disconnect device with a contact gap of at...

Page 15: ... It s recommended to use 8m 26 1 4feet long communication line The wire size of the communication line should be no less than 0 75mm2 AWG18 It s recommended to take 0 75mm2 AWG18 power cords as the communication line 4 Installation of the Unit 4 1 Installation of the Indoor Unit 4 1 1 Indoor unit dimension Install the indoor unit in a location which can withstand a load of at least five times the ...

Page 16: ... 28 3 8 740 29 125 4 7 8 205 8 265 10 1 2 TU24HFI 1100 43 3 8 515 20 3 8 820 32 1 4 1160 45 5 8 1280 50 3 8 560 22 1000 39 1 2 160 6 1 4 235 9 1 4 270 10 1 2 TU30HFI TU36HFI 1010 39 3 4 750 29 1 2 820 32 1 4 1115 43 7 8 1225 48 1 4 775 30 1 2 980 38 1 2 160 6 1 4 230 9 1 8 290 11 3 8 TU42HFI TU48HFI 1170 46 3 8 645 25 3 8 850 33 1 2 1150 45 1 4 1340 52 3 4 750 29 1 2 950 37 1 2 190 7 1 2 315 12 1 ...

Page 17: ...enough to hang the unit Mark the bolt positions from the installation template With a concrete drill drill for 12 7mm 1 2inch diameter holes Fig 4 3 2 Insert the anchor bolts into the drilled holes and drive the pins completely into the anchor bolts with a hammer Fig 4 4 3 Install the hanger to the unit Fig 4 5 4 Pass the unit hangers over the bolts installed to the ceiling and install the unit wi...

Page 18: ...ted by more than 5 During installation if the outdoor unit has to be exposed to strong wind it must be fixed securely 4 2 1 Outdoor unit dimension Fig 4 8 Table 4 2 Unit mm inch Item Model A B C D E TU18H3O 955 37 5 8 395 15 1 2 700 27 1 2 560 22 360 14 1 8 TU24H3O 980 38 5 8 425 16 3 4 790 31 1 8 610 24 395 15 1 2 TU30H3O TU36H3O 1105 43 5 8 440 17 3 8 1100 43 1 4 630 24 7 8 400 15 3 4 TU42H3O 96...

Page 19: ...ation Method Insert the pipe joint into the hole Φ25mm 1inch located at the base plate of the unit and then connect the drain pipe to the pipe joint Fig 4 9 4 3 Installation of the Connection Pipe 4 3 1 Flare Processing 1 Cut the connection pipe with the pipe cutter and remove the burrs 2 Hold the pipe downward to prevent cuttings from entering the pipe 3 Remove the flare nuts at the stop valve of...

Page 20: ...g the pipe as you want be sure to put the heat insulating pipe back on the pipe and secure it with tape Pipe Cutter Cut line Heat insulating pipe Fig 4 12 To prevent breaking of the pipe avoid sharp bends Bend the pipe with a radius of curvature of 150mm 5 7 8inch or over If the pipe is bent repeatedly at the same place it will break 4 3 3 Connecting the Pipe at the Indoor Unit Side Detach the cap...

Page 21: ...orque wrench to finally tighten it Fig 4 13 Fig 4 14 Table 4 3 Flare nut tightening torque Pipe Diameter Tightening Torque 6mm 1 4inch 15 30N m 11 22ft 1b 9 5mm 3 8inch 35 40N m 26 29ft 1b 12 7mm 1 2inch 45 50N m 33 37ft 1b 16mm 5 8inch 60 65N m 44 48ft 1b Be sure to connect the gas pipe after connecting the liquid pipe completely 4 3 4 Connecting the Pipe at the Outdoor Side Unit Tighten the flar...

Page 22: ...nts Indoor Side Only Stick coupler heat insulation large and small to the place where connecting pipes Fig 4 16 4 3 7 Liquid Pipe and Drain Pipe 1 If the outdoor unit is installed lower than the indoor unit See Fig 4 17 1 A drain pipe should be above ground and the end of the pipe does not dip into water All pipes must be restrained to the wall by saddles 2 Taping pipes must be done from bottom to...

Page 23: ...vacuation to the vacuum pump 4 Open the switch at the lower pressure side of the manifold valve assembly and start the vacuum pump Meanwhile the switch at the high pressure side of the manifold valve assembly should be kept closed otherwise evacuation would fail 5 The evacuation duration depends on the unit s capacity generally 20 minutes for the 18k units 30 minutes for the 24k 30k 36k units 45 m...

Page 24: ...t Cap Hose Vacuum pump Cap Service pipe Cap Connection pipe Fig 4 19 Note For the large sized unit it has the service port for both the gas valve and the liquid valve During evacuation it is available to connect two hoses of the manifold valve assembly to two service ports to quicken the evacuating speed 4 4 2 Additional Charge Refrigerant suitable for a piping length of 7 6m 25feet is charged in ...

Page 25: ...prevent rain water from pouring in and cause property loss or personal injury 3 Condensate drain pipe should be connected into special drain system for air conditioner 4 5 1 Installation of Drain Piping Install the drain hose in accordance with the instructions in this installation manual and keep the area warm enough to prevent condensation Problems with the piping may lead to water leaks 1 Insta...

Page 26: ...eft and right sides Select the drain port to match the local conditions Fig 4 23 7 When the unit is shipped from the factory the drain port is defaulted to be the one on the left side electric box side the port on right side has been plugged 8 When using the drain port on the right side of the unit reinstall the drain cap to the left side drain port Fig 4 25 Fig 4 25 ...

Page 27: ...an be directly attached to the drain hose 4 Considerations for the unit with the condensate pump 1 For the unit with the condensate pump only one drain port at the side close to the electric box is prepared and only through it the drain hose can be connected 2 See Table 3 3 for the size of the drain port of the unit with the condensate pump which is different from that of the unit without the cond...

Page 28: ...d additional force Fig 4 29 When multiple drain hoses are used their installation should be performed as shown in the figure below Fig 4 30 4 5 2 Testing of Drain Piping After piping work is finished check if drainage flows smoothly As shown in the figure add approximately 1 liter of water slowly into the drain pan and check drainage flow during COOL running Fig 4 31 ...

Page 29: ...Air Inlet Table 4 5 Unit mm inch Item Model Supply Air Outlet Return Air Inlet A B C D TU18HFI 123 4 7 8 736 29 710 28 166 6 1 2 TU24HFI 158 6 1 4 818 32 1 4 994 39 1 8 195 7 5 8 TU30HFI 158 6 1 4 818 32 1 4 994 39 1 8 195 7 5 8 TU36HFI 158 6 1 4 818 32 1 4 1000 39 3 8 206 8 1 8 TU42HFI 158 6 1 4 818 32 1 4 1000 39 3 8 206 8 1 8 TU48HFI 190 7 1 2 850 33 1 2 940 37 286 11 1 4 ...

Page 30: ... outlet of the indoor unit Among all supply air outlets at least one should be kept open Bottom Return Air Installation only for the 18k Units 2 The default installation location of the rectangular flange is at the back and the return air cover plate is at the bottom as shown in Fig 4 35 Fig 4 35 3 If the bottom return air is desired just change the place of the rectangular flange and the return a...

Page 31: ...disconnected The rated voltage of the unit is as shown as Table 3 4 and Table 3 5 Before turning on verify that the voltage is within the 187 252V range for single phrase units Always use a special branch circuit and install a special receptacle to supply power to the air conditioner Use a special branch circuit breaker and receptacle matched to the capacity of the air conditioner The special bran...

Page 32: ... 25mm 1inch 2 Using a screwdriver remove the terminal screw s on the terminal board 3 Using pliers bend the solid wire to form a loop suitable for the terminal screw 4 Shape the loop wire properly place it on the terminal board and tighten securely with the terminal screw using a screwdriver 2 For strand wiring Fig 4 37 1 Cut the wire end with a wire cutter or wire cutting pliers then strip the in...

Page 33: ...t and outdoor unit Match the terminal block numbers and connection cord colors with those of the indoor unit side Erroneous wiring may cause burning of the electric parts Connect the connection cords firmly to the terminal block Imperfect installation may cause a fire Always fasten the outside covering of the connection cord with cord clamps If the insulator is not clamped electric leakage may occ...

Page 34: ...ctively The power cord and the wire of the fresh air valve are high voltage while the communication cord and connection wire of the wired controller are low voltage They should run separately against electromagnetic interference The high voltage and low voltage lines should pass through the rubber rings at different electric box covers Do not bundle the connection wire of the wired controller and ...

Page 35: ...oor units by attaching a ground wire Unit shall be grounded in compliance with the applicable local and national codes 6 Electric wiring of outdoor unit side NOTICE When connecting the power supply cord make sure that the phase of the power supply matches with the exact terminal board If not the compressor will rotate reversely and run improperly Remove the big handle 18k 30k front board 36k 48k o...

Page 36: ...tion 8 F0 Indoor ambient temperature sensor error 9 F1 Evaporator temperature sensor error 10 F2 Condenser temperature sensor error 11 F3 Outdoor ambient temperature sensor error 12 F4 Discharge temperature sensor error 13 F5 Temperature sensor error of wired controller 14 C5 Capacity code error 15 EE Outdoor memory chip error 16 PF Electric box sensor error 17 H3 Compressor overload protection 18...

Page 37: ...otection 34 P9 Zero passage protection 35 PA AC current protection 36 Pc Drive current error 37 Pd Sensor connecting protection 38 PE Temperature drift protection 39 PL Bus low voltage protection 40 PH Bus high voltage protection 41 PU Charge loop error 42 PP Input voltage abnormality 43 ee Drive memory chip error NOTICE When the unit is connected with the wired controller the error code will be s...

Page 38: ...ooling 19 4 67 0 13 9 57 0 18 0 0 Rated Heating 26 7 80 0 23 9 75 0 18 3 65 0 Low Temp Heating 20 0 68 0 18 0 0 Notes The design of this unit conforms to the requirements of ARI 210 240 2008 standard The air volume is measured at the relevant standard external static pressure Cooling heating capacity stated above is measured under nominal working conditions corresponding to standard external stati...

Page 39: ...elect one from the two indoor room sensors on the basis of the engineering requirement Refer to the section of wire controller instructions for detailed operation Indoor Indoor room room sensor sensor A Indoor Indoor room room sensor sensor B Fig 7 1 7 2 Checking of Outdoor Ambient Temperature The outdoor ambient temperature can be checked on the wire controller for the convenience of users before...

Page 40: ...controller instructions for detailed operation Fig 7 3 8 Troubleshooting and Maintenance 8 1 Troubleshooting If your air conditioning unit suffers from abnormal operation or failure please first check the following points before repair Failure Possible Reasons The unit cannot be started The power supply is not connected Electrical leakage of air conditioning unit causes tripping of the leakage swi...

Page 41: ...nit immediately and contact the local service agency designated by TOSOT Only ask professional serviceman to check and repair the unit 8 2 Routine Maintenance Only a qualified service person is allowed to perform maintenance Before accessing to terminal devices all power supply circuits must be disconnected Do not use water or air of 50 C 122 F or higher for cleaning air filters and outside panels...

Page 42: ...1 Removing the air filter from the duct 2 Cleaning the air filter Remove dust from the air filter using a vacuum cleaner and gently rinse them in cool water Do not use detergent or hot water to avoid filter shrinking or deformation After cleaning dry them in the shade 18k 24k 48k 3 Replacing the air filter Reinstall the filter as before ...

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